Patent US2632718A successfully refreshed from Google Patents.
US2632718A
Expired / Lapsed
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Method of descaling ferrous metals
Assignee: Individual
•
Filing: 1946-08-21
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Granted: 1953-03-24
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Expires: 1966-08-21
Abstract
No abstract record available.
Inventors
- 👤 Nathan H Brodell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:12
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/82; C23; C23G; C23G1/00; C23G1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A METHOD OF DESCALING FERROUS METAL ARTICLES, THE STEPS WHICH CONSIST IN IMMERSING THE ARTICLES IN A SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPLETELY OXIDIZED POLYVALENT METALLIC HALDES AND ALIPHATIC AND AROMATIC POLYHALIDES TO FORM A COATING OF SAID COMPOUND ON SAID ARTICLE, THEN HEATING THE ARTICLES TO A TEMPERATURE SUCH THAT A CHEMICAL CHANGE IN THE COATING LOOSENS THE SCALE ON SAID ARTICLES, AND THEN QUENCHING THE ARTICLES IN A SOLUTION OF A COMPOUND WHICH BREAKS THE SCALE AWAY FROM THE ARTICLES.
Claim 2
Dependent Claim
88 words
IN A METHOD OF DESCALING FERROUS METAL ARTICLES, THE STEPS WHICH CONSIST IN IMMERSING THE ARTICLES IN A SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPLETELY OXIDIZED POLYVALENT METALLIC HALDES AND ALIPHATIC AND AROMATIC POLYHALIDES TO FORM A COATING OF SAID COMPOUND ON SAID ARTICLE, THEN HEATING THE ARTICLES TO A TEMPERATURE SUCH THAT A CHEMICAL CHANGE IN THE COATING LOOSENS THE SCALE ON SAID ARTICLES, AND THEN QUENCHING THE ARTICLES IN A SOLUTION OF A COMPOUND WHICH BREAKS THE SCALE AWAY FROM THE ARTICLES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |